Improvement happens outside your comfort zone. Before practice, expect to feel uncomfortable when you're pushing yourself physically, technically, or mentally. Commit to getting out of your comfort zone as much as possible. Outside your comfort zone is where you will improve and perform your best.
During:
When something feels uncomfortable, instead of backing away from it, remind yourself, "This is where improvement happens." Embrace the discomfort and recommit to full effort.
After:
Did today's MindRep help you? How did today's MindRep help you? Do you want to own it and make it a consistent part of your training?